/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "interpolationWeights.H"
#include "ListOps.H"
#include "IOobject.H"
#include "HashSet.H"
#include "objectRegistry.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class ListType1, class ListType2>
typename Foam::outerProduct
<
	typename ListType1::value_type,
	typename ListType2::value_type
>::type
Foam::interpolationWeights::weightedSum
(
	const ListType1& f1,
	const ListType2& f2
)
{
	typedef typename outerProduct
	<
		typename ListType1::value_type,
		typename ListType2::value_type
	>::type returnType;

	if (f1.size())
	{
		returnType SumProd = f1[0]*f2[0];
		for (label i = 1; i < f1.size(); ++i)
		{
			SumProd += f1[i]*f2[i];
		}
		return SumProd;
	}
	else
	{
		return Zero;
	}
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// ************************************************************************* //
